Natsu (凪津 or ナツ) is a character in the Soul series of fighting games. Her first appearance was in the series' sixth installment, Soulcalibur V. She appears as a playable unit in Project X Zone 2 as the sole representative of the Soulcalibur franchise.
What lies in her soul is Confidence. In Soulcalibur V's promotional material, she is referred to as a Worthy Successor.